Encyclopedia Entry: 74AC74SCX

Product Overview

Category

The 74AC74SCX belongs to the category of integrated circuits (ICs) and specifically falls under the family of flip-flops.

Use

This product is primarily used in digital electronic systems for storing and manipulating binary data. It serves as a fundamental building block for sequential logic circuits.

Characteristics

• The 74AC74SCX operates on a supply voltage range of 2V to 6V.
• It offers high-speed performance, making it suitable for applications requiring quick data storage and retrieval.
• This flip-flop IC has a compact package size, allowing for space-efficient circuit designs.
• It exhibits low power consumption, making it energy-efficient.

Package and Quantity

The 74AC74SCX is available in a small outline integrated circuit (SOIC) package. Each package contains one unit of the IC.

Specifications

• Supply Voltage Range: 2V to 6V
• Logic Family: Advanced CMOS (AC)
• Flip-Flop Type: D-Type
• Number of Flip-Flops: 2
• Maximum Clock Frequency: 100 MHz
• Propagation Delay Time: 5 ns
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74AC74SCX features a 14-pin SOIC package with the following pin configuration:

1. Clear (CLR)
2. Data Input (D)
3. Clock Input (CLK)
4. Output Q1
5. Output Q1 Complement (/Q1)
6. Ground (GND)
7. Output Q2
8. Output Q2 Complement (/Q2)
9. Set (SET)
10. Preset Enable (PRE)
11. Clock Enable (CE)
12. VCC (Positive Power Supply)
13. Data Input (D)
14. Clear (CLR)

Functional Features

The 74AC74SCX offers the following functional features:

• Data Storage: It can store binary data at the input (D) and retain it until a clock signal triggers an update.
• Edge-Triggered Operation: The flip-flop responds to changes in the clock signal's rising or falling edge, ensuring accurate data capture.
• Clear and Set Inputs: The CLR and SET inputs allow for resetting or setting the flip-flop outputs to specific states.
• Preset Enable and Clock Enable: These inputs enable or disable the preset and clock functions, respectively.

Advantages and Disadvantages

Advantages

• High-speed performance allows for efficient data processing.
• Low power consumption contributes to energy efficiency.
• Compact package size enables space-saving circuit designs.
• Versatile functionality supports various sequential logic applications.

Disadvantages

• Limited number of flip-flops per IC (2 in this case).
• Requires an external clock signal for proper operation.
• Sensitivity to noise and voltage fluctuations may affect reliability.

Working Principles

The 74AC74SCX operates based on the principles of positive-edge-triggered D-type flip-flops. When a rising edge is detected on the clock input (CLK), the current state of the data input (D) is captured and stored in the flip-flop. This stored value is then available at the output pins (Q1, /Q1, Q2, /Q2) until the next clock transition occurs.

Detailed Application Field Plans

The 74AC74SCX finds application in various digital systems, including but not limited to: - Microprocessors and microcontrollers - Communication systems - Data storage devices - Control systems - Signal processing circuits

Its ability to store and manipulate binary data makes it essential for sequential logic circuits in these fields.

Alternative Models

For those seeking alternatives to the 74AC74SCX, several similar flip-flop ICs are available on the market. Some notable alternatives include: - 74HC74 - 74LS74 - CD4013 - SN74LS175

These alternative models offer similar functionality and can be used as substitutes depending on specific requirements.

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